package com.java.excend.test_3;

/**
 * @author luzhikun
 * @date 2020/12/5- 21:21
 */
public class Circle_1 {
    private double radius;

    public Circle_1() {
        this.radius = 1;
    }

    public Circle_1(double radius) {
        this.radius = radius;
    }

    public void setRadius(double radius) {
        this.radius = radius;
    }

    public double getRadius() {
        return radius;
    }

    public double findArea() {
        return radius * radius * Math.PI;
    }
}
